著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL United States. Internal Revenue Service,"Trend analyses and related statistics : United States, districts, regions, and service centers",Rev. 5-88,"Dept. of the Treasury, Internal Revenue Service",1988,Document,,,,https://cir.nii.ac.jp/crid/1130282271661636224